Tasel

The circuit can cut-outs the over-load voltage of battery while charging. Work automatically charge and recharge, very-low power load less than 20mA, suitable for use with 4.8-12.5V batteries.
This multifunctional circuit also can be use at your expensive batteries and many other low-power consumption. Read more »

This circuit possible to deliver about 200W power output produce by Phillips Semiconductor. Using 2 PHP1BN11QT, input voltage between 30 and 45 VoltsDC for this circuit, trigger the 4Ω impedance load speaker in to a powerful audio output. Other features of this circuit are THD+N (total harmonic distortion-plus-noise) PL = 10 W frequency range from 20 Hz to 20 kHz < 0.03 % , S/N signal-to-noise ratio > 120 dB , fPWM PWM frequency idle ~ 400 kHz , Voffset offset voltage DC value < 50 mV. For maximum performance, please use heatsink on the MOSFETs. Read more »

Work as pre-amp modul, this circuit offers 20db+ of clean boost. RC & AC Booster Guitar Effect by Xotic also featured controls for volume, gain and EQ controls for treble and bass. With 9V power DC, this circuit is easy to use. As the name, “RC” is mean Really Clean was tested. Read more »

TDA7294, monolithic IC with output up to 100W as main core for this useful audio amplifier. This circuit is a mono for a single channel in 4Ω or 8Ω load. Simple audio class A-B amplifier. Read more »

Based on three characteristics: good quality sound, easy to make, and not expensive circuit, this TOSHIBA DX is worth to try. Just need 36VDC voltage input as a fuel, the circuit can produce 100W output on 40 Ohm speaker or 50W on 80 Ohm, using a pair of TOSHIBA A1943 – C5200 per channel. Read more »

This inverter circuit is very useful for low load application such as emergency light, radio, or DVD player. With transistors as main active component, please take more attention when you assemble this 100 W inverter circuit.
Power source of this circuit just 12V DC, but can produce about 100W at 220V AC with simple assembling and not need a lot of parts. Read more »

This 400 W MOSFET Audio Amplifier using IRFP448 circuit is simple project. With low noise and distortion, but powerful. As the fuel, this project consume 70-80 Vdc and 5 A fuse as the protector for short circuit. Read more »

The circuit of this 30W audio amplifier produce a clear audio output quality. The circuit module doesn’t have any improvement. With Darlington pair in transistor TIP141 and TIP146. This transistor need heat-sink or better temperature. Read more »

Power amplifier settled on HEXFET IRF9540 and IRF540 which probably produce 65 W at the output. This circuit is simple and have a good audio quality. For thermal static, use heatsink on Q8, Q10, Q11, Q12, and Q13. Read more »

Mini stereo audio amplifier with low distortion. Take about 10% distortion on 4 Ohm – 8 Ohm loudspeaker. The LM4756 can delivers 7W power output. This small audio amplifier also featured quiet fade-in/out mute function, stereo variable line-out pins, AC output short circuit protection, and thermal shutdown protection. Read more »